On which blockchain can you deploy the DAI smart contract?

You can deploy your DAI smart contract on the Ethereum Kovan blockchain as it is easier to deploy DAI tokens in this network. Additionally, you need a decentralized wallet like Metamask, Kovan ETH, and Kovan DAI. To simplify this process, use the environment https://remix.ethereum.org in-browser IDE. A contract faucet is one of the best contracts you can leverage to display the integration of your DAI coins. Since you already leveraged a faucet to obtain some Kovan ETH, you can create another faucet to acquire Kovan DAI coins. Proceed by writing your contract and deploying your smart contract.

To deploy a smart contract, you simply send an Ethereum transaction that contains the smart contract's code without specifying a recipient. Deployment transaction in Ethereum block #4752008 for DAI.